Bidirectional anti-high-overload miniature electric steering gear driving mechanism, electric steering gear and bidirectional anti-high-overload miniature electric steering gear driving method

The invention discloses a bidirectional anti-high-overload miniature electric steering gear driving mechanism and method. The bidirectional anti-high-overload miniature electric steering gear drivingmechanism comprises a motor. The motor is fixed by a motor gland and a wave washer in an elastic axis direction. A gearing shaft I and a gearing shaft II are fixed by spacer pins, balls and deep groove ball bearings to a shell body I and a shell body II. An output shaft I fixed by a cover plate I, a cover plate II and angular contact bearings to the shell body I and the shell body II. The motor transmits motions to the gearing shaft I through a first-stage bevel gear. The gearing shaft I transmits motions to the gearing shaft II through a first-stage spur gear. The gearing shaft II then transmits motions to the output shaft through a first-stage spur gear. The bidirectional anti-high-overload miniature electric steering gear driving mechanism has the advantages that the structure is simple, and by reasonable layou